永磁同步电机无位置传感器带速重投研究

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摘要带速重投是轨道牵引永磁同步电机无位置传感器控制系统的关键技术。当永磁同步电机运行在一定转速下,通过将三相逆变器所有下桥臂短路,根据短路电流可以获取电机的转速及转子位置信息。在此基础上,提出了一种带速重投时短路时间的选取方法,提高了电机在不同转速下转子位置估算的准确性,并分析了忽略电机电阻压降计算短路时交直轴电流响应对估计结果准确性的影响,实验结果验证了上述方法的有效性。

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	郭希铮
	刘帅
	宋玉美

关键词 ：永磁同步电机, 带速重投, 短路电流转子位置估计, 估计误差分析

Abstract：Restart at coasting condition is essential for rotation sensorless control system of railway traction PMSM.Under a certain speed,rotor position and speed could be acquired according to the measured three-phase current after all lower bridge arms are short-circuited by a zero voltage vector applied to the three-phase VSI.On the above basis,a method to determine the short circuit time is proposed to improve the accuracy of the estimation results at different coasting speed.Also the estimation error caused by neglecting the stator resistance is analyzed.The experimental result verified the efficiency of proposed method.

Key words： Permanent magnet synchronous motor (PMSM) restart at coasting condition estimation of rotor position according short circuit current estimation error analysis

收稿日期: 2016-08-20 出版日期: 2017-03-23

PACS:

TM315

基金资助:中央高校基本科研业务费专项资金资助(2016YJS141)。

作者简介: 郭希铮男,1980年生,副教授,硕士生导师,研究方向为电力电子装置、永磁同步电机控制等。E-mail:xzhguo@bjtu.edu.cn(通信作者)刘帅男,1989年生,硕士研究生,研究方向为永磁同步电机控制。E-mail:14121431@bjtu.edu.cn

引用本文:

郭希铮,刘帅,宋玉美. 永磁同步电机无位置传感器带速重投研究[J]. 电工技术学报, 2016, 31(增刊2): 255-261. Guo Xizheng, Liu Shuai ,Song Yumei. Research on Restart at Coasting Condition for Rotation Sensorless Permanent Magnet Synchronous Machines. Transactions of China Electrotechnical Society, 2016, 31(增刊2): 255-261.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I增刊2/255

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